How to Make a GSM Antenna

If you live in an area with intermittent GSM cell phone coverage, and your phone has an external jack, an antenna may improve your reception. GSM is a mobile communications technology that converts voice conversation into digital data, and transmits this data between phones via cellular transmission towers. A homemade GSM antenna can boost the signal strength between your phone and distant cell towers.

Instructions

File an end of the copper wire until it fits snugly in the N connector solder tab. Solder the wire to the N connector.

2

Measure and mark 77.5mm from the base of the N connector solder tab to the tip of the wire. Cut the wire a few millimetres longer, and then file the wire down to the marked length.

3

Find the centre of the circuit board by drawing diagonals from the corners, on the bottom side of the board. Drill a small hole in the centre of the board. Gradually widen the hole with larger bits until the N connector fits. Mount the N connector to the copper side of the board, with the copper wire facing up.